# DGM

Hi, I'm nobody.

I don't belong here, but I have nothing better to do.

Matlab used to be part of my work.

Now it's part of my hobbies.

That's pretty sad, really.

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each columun of a 2D matrix multiply with a 3D array

This is something, but I bet there are other ways too. This is about 10x faster on my hardware/version, but only about 2-3x fa...

en dag ago | 0

| accepted

Copy-pasting variables (values) to edior in 2021b

Just don't rely on some sort of automagic formatting of pasted content. If you want to save an array variable as a literal cons...

en dag ago | 0

To save each of sub-indices (luminance, contrast and structure) in SSIM

Unless you need something special, you should be able to do this with standard syntax for ssim(). Mind you, the SSIM is the mea...

en dag ago | 0

please give me answer what is wrong

Use elementwise division. x = 0:0.1:103; y = ((28*log(x) - 2*x - 12*x.^2.*log(x) - 4*x.^3.*log(x) - 12*x.*log(x) - 2*x.^2 - (2...

2 dagar ago | 0

| accepted

How to turn text into numbers

Well I'm sure there are more robust ways, but if all the file ever has is those two lines in that specific order with that speci...

3 dagar ago | 0

| accepted

How to close open contours

The contours are open because that's what describes the data. To close the contours misrepresents the behavior of the data at t...

4 dagar ago | 0

| accepted

Problme with Text analysis

I'm terrible with regex, but this might get you somewhere. Replaces everything but lowercase alpha and underscores. A = {'9.ba...

5 dagar ago | 0

I am missing the test signal "WashingMachine-16-8-mono-200secs.mp3" from the denoise example.

That should be included with the audio toolbox after R2019a. The files should be in $MLROOT/toolbox/audio/samples/ where $MLRO...

5 dagar ago | 0

Segment Image and Save as New Picture

You can't have an image of "just the dog", in the sense that the image must be a rectangular array. The background must be some...

5 dagar ago | 0

what is a(n) MATlab code that can help me calculate the volume of a cylinde then increase that result by 20% to get a result of 18m.

h0 = 15; dV = 0.2; hf = h0*(1+dV); fprintf('Oh my god, it''s %.2f meters tall! Aieee!',hf)

5 dagar ago | 0

| accepted

How to normalize signal to have mean=0 and amplitude 0 to 1

If you have a dataset where the mean is zero and the amplitude is within the interval [0 1], then the entire dataset is zero-val...

5 dagar ago | 0

Remake this without a loop

What's wrong with just using the test you're already doing? In the case you've given, the vector is unnecessary. A(A >= 1.5) =...

7 dagar ago | 1

Adding a row vector into the diagonal of another vector with m, n dimensions using for loop.

Actually, using a loop was pretty dang simple, now that I tried it. A = randi(9,5,10); b = 11:20; diagonalthing(A,b) dia...

7 dagar ago | 0

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How to get the centerline of a binary region

There's this. A = imread('arc.png')>128; B = bwmorph(A,'skel',inf); % skeletonize B = imfill(B,'holes'); % get rid of any...

7 dagar ago | 1

| accepted

how to remove [0,0,0] cell from an array

Consider: C = {rand(2,3) rand(3,3) rand(4,3) [0 0 0] rand(5,3)}.' iszerotuple = cell2mat(cellfun(@(x) isequal(x,[0 0 0]),C,'un...

7 dagar ago | 0

| accepted

grazing goat problem, how much of the area can the goat graze ?

Your answer is reasonable. As a point of verification: rf = 1; rg = 0.8; % intersection point locations % could also use ...

7 dagar ago | 0

How are the indices computed in gray2ind(...)?

Here's an example for a uint8 image: A = imread('cameraman.tif'); maplength = 32; [B bmap] = gray2ind(A,maplength); % as...

8 dagar ago | 0

| accepted

make a matrix out of list

It's not really clear if you want the contents of the file to be read into an array, or whether you just want a numeric (or othe...

8 dagar ago | 0

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Adding noise to image and removing it with average filter

The line mentioned in the error is certainly nonsensical, but afaik it shouldn't actually throw an error (at least in R2009b - R...

8 dagar ago | 1

Why isn't my matrix being filled?

When you define a function, you need to describe its input arguments and output arguments. This function definition has no in...

8 dagar ago | 0

Menu command list of colors converted to integers

I know this is part of the other question, but to clarify, the menu() command simply returns the index of the selected element w...

8 dagar ago | 0

Convert nested text cell array

I'm sure there's a simpler way, but idk. This will convert to a table. Note that the table columns are cell vectors. This i...

9 dagar ago | 0

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Loop iteration not working

Consider: x = 1:10 This expression by itself results in x being stored as a vector for y = 1:10 y end y In a loop sta...

9 dagar ago | 0

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No output from a for and elseif loop

That should be readlines(). P is a cell array of numeric vectors, so address it accordingly. Any assignment to J overwrites th...

9 dagar ago | 0

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Turning an entire script into a function

Try something like this. function [playerwon] = Battleship3(boardsize,numofguess,numships) % playerwon = Battleship3({boards...

9 dagar ago | 0

Taking a string input and transferring it to a integer

Meh. numbands = 4; colornames = {'black','brown','red','orange','yellow','green','blue','violet','gray','white','gold','silv...

9 dagar ago | 1

| accepted

Cropping images around the center of an image with a particular size

I don't know how you're getting that huge size. EDIT: I know why. I'll mention that at the end. The code will return a 225x22...

10 dagar ago | 0

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Remove a "plane" from my 3d plot

You could try to clip off the excess points with NaN and be left with a gap in the surface at the joint, or you could just avoid...

10 dagar ago | 2

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Error in array bounds

% ... % this loop has been simplified to the point that it works % for sx = 0.01:5 % s = [sx, 0, 0; % 0, sx, 0...

11 dagar ago | 0

How can I add more colors to semilogy?

The colors which are automatically used when plotting things with no explicitly-defined colors are specified by the axes 'coloro...

11 dagar ago | 0